From the article:

>The Federal Aviation Administration (FAA) requires software that 
>runs commercial (and many military) aircraft be approved as part 
>of a DO-178B certification. DO-178B Level A is the highest safety 
>standard for software design, development, documentation, and 
>testing. It is required for any software whose failure could cause
>or contribute to the catastrophic loss of an aircraft.

>Several operating systems have been DO-178B Level A certified. Until 
>Linux is certified to DO-178B Level A, our soldiers, sailors, airmen >and marines should not be 
asked to trust their lives with it.

He makes a point here, I think.

Something he didn't address, but I'm not sure if he should have is this:
How much does the security of linux depend on the person running it?

Josh